DBus Error note

Functions                                     Defines          Values
======================================================================
dbus_bus_get                                  EPERM            1
dbus_message_get_args                         ENOMSG           42
dbus_connection_send_with_reply_and_block     ECOMM            70
dbus_connection_send                          ECOMM            70
dbus_message_new_method_call                  EBADMSG          74